Industrial filter



FIG. 1 is a perspective view of an industrial filter showing my new design;

FIG. 2 is a front view thereof, the back view and the side views being identical;

FIG. 3 is a top view thereof; and,

FIG. 4 is a bottom view thereof.

The broken lines shown in the drawings are included for purposes of illustrating portions of the industrial filter and form no part of the claimed design. 

CLAIM The ornamental design for an industrial filter, as shown and described. 